选择性超微量分析
选择性超微量分析

利用 ITEX - FLAVOURSPEC® 对挥发性物质进行选择性超痕量头空分析

通过气相色谱仪分离复杂基质,可以最佳地利用 IMS 的灵敏度,在食品和风味相关应用中,这种灵敏度对(非)风味诱导化合物具有极高的灵敏度。将这种独特的装置与 ITEX(管内萃取)DHS(动态顶空)热吸附的卓越富集特性相结合,可在需要最低(低于 ppb)检测限和增强分离特性的痕量分析领域树立标杆。

选择性超痕量顶空分析

选择性超痕量顶空分析:

  • 全面富集挥发性有机化合物,以提高灵敏度
  • 选择性富集/控制性贫化化合物(以处理不需要的或干扰性基质化合物)
  • 基于高挥发性和半挥发性成分的绿茶指纹高灵敏度检测
  • 酒精饮料:威士忌、葡萄酒、烈酒(陈酿、质量控制、风味分析等)
  • 鱼虾中 TMA 的检测
  • 灵敏检测地奥司明
  • 食品中不同酮类的检测

 

 

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Analysis of flavors, pesticides, and biomarkers directly from complex food matrix using the automated Vacuum In-Tube Extraction (V-ITEX)
网络研讨会

Analysis of flavors, pesticides, and biomarkers directly from complex food matrix using the automated Vacuum In-Tube Extraction (V-ITEX)

Extraction of volatile compounds is a widely used approach for analysis of foods and beverages.  By the nature of gas phase sampling, the limiting factor for polar analytes are given by low vapor pressure or higher boiling points of semi-volatile compounds. These limitations can be overcome by sampling at decreased pressure levels using vacuum conditions. This has been shown in several publications using vacuum sampling techniques. In this study, a fully automated approach of Vacuum In-Tube Extraction (V-ITEX) is presented, a simple and fully automated technique using PAL system autosamplers. The application examples include flavors, fragrances, off-flavors, pesticides and biomarkers by extractions directly from the food sample matrix, such as Honey, Bee Wax, Cheese, Onions, Blood and Urine.  

Presented by:

Pascal Fuchsmann, Head of Flavor Analytics Agroscope

Stefan Cretnik, Product Manager CTC Analytics AG

Quantitation of volatile organic compounds in drinking water using ITEX
应用说明

Quantitation of volatile organic compounds in drinking water using ITEX

Demonstration of a routine analytical method for the quantitation of volatile organic compounds in drinking water, using the
TriPlus RSH ITEX system along with a Thermo Scientific™ ISQ™ 7000 MS system coupled with a Thermo Scientific™ TRACE™
1310 Gas Chromatograph (GC) and Thermo Scientific™ Chromeleon™ Chromatography Data System (CDS). Method linearity
and detection limits were assessed to evaluate method performance.

ITEX Dynamic Headspace Application Notes
应用说明

ITEX Dynamic Headspace Application Notes

ITEX DHS Application Notes for Environmental, Chemical and Food Safety analysis

Static and Dynamic Headspace Analysis
电子书

Static and Dynamic Headspace Analysis

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A Comparison of ITEX Dynamic Headspace–GC/MS to other Enrichment Techniques for Analysis of Flavoring Compounds
海报

A Comparison of ITEX Dynamic Headspace–GC/MS to other Enrichment Techniques for Analysis of Flavoring Compounds

The automated ITEX Dynamic Headspace unit demonstrated equivalent accuracy and precision when compared to purge and trap and overall was more sensitive than the other enrichment techniques. The ITEX unit allows for automated analysis and optimization of conditions which drastically reduces analyst’s time when compared to performing the experiments manually with the purge and trap without any reduction in sensitivity, accuracy and reproducibility.

Analysis of volatile compounds from honeys to differentiate plant and geographical origins
海报

Analysis of volatile compounds from honeys to differentiate plant and geographical origins

The analysis of volatile organic compounds (VOCs) is a faster approach to identify the honey’s origin than traditional methods, which is important for the quality control of honeys. In-tube extraction dynamic headspace (ITEX-DHS) is a fully automated microextraction technique, in which the enrichment of analytes takes place by repeated aspiring and dispensing of the sample headspace through a sorbent trap

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